-er b-u bbb bbc bbe bbq bbr bbs bbu bcb bcc bce bcq bcr bcs bcu be- beb bec bee beq ber bes beu bqc bqe brb bre brq brr brs bru bsb bsc bse bsr bss bsu bub buc bue bur bus buu c-- cbb cbc cbe cbq cbr cbs cbu ccb ccc cce ccr ccs ccu ce- ceb cec cee ceq cer ces ceu cqb cqc cqs crb crc cre crq crr crs cru csb csc cse csq csr css csu cub cuc cue cuq cur cus cuu ebb ebc ebe ebq ebr ebs ebu ec- ecb ecc ece ecq ecr ecs ecu eeb eec eee eer ees eqe eqq eqs equ erb erc ere erq err ers eru es- esb esc ese esq esr ess esu eu- eub euc eue eur eus qbc qbe qbq qbs qcc qcs qec qee qqq qqu qrb qrc qre qrs qru qsc qsr qu- que qur qus rbb rbc rbe rbr rbs rbu rcb rcc rce rcr rcs rcu re- reb rec ree req rer res reu rqc rqs rrb rrc rrq rrr rrs rru rsb rsc rse rsq rsr rss rsu rub ruc rue rur rus ruu sbb sbc sbe sbq sbr sbs sbu scb scc sce scr scs scu se- seb sec see seq ser ses seu sqq sqr sqs sr- srb src sre srq srr srs ss- ssb ssc sse ssq ssr sss ssu sub suc sue suq sur sus suu ubb ubc ube ubr ubs ubu ucb ucc uce ucr ucs ucu ueb uec uee uer ues ur- urb urc ure urr urs uru usb usc use usr uss usu uuc uue uur uus uuu

bbbb bbbq bbbs bbeb bbqs bbrc bcbc bcbs bccc bccs bcec bcer bces bcrs bcru bcsc bcss bcuc bebb bebe becs becu beeb beer bees berc bere berr bers beru bes- bese bess beur bque brcb brce breb brec bree brer bres brrr brrs brsb brsr bruc brue brus bscs bseb bsec bsee bser bses bssc bsse bubb bube bubq bubs bubu bucc buce bucs bucu buer bueu bur- burb bure burr burs buru busc buse buss busu buus cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cber cbre cbsc cbse cbus ccbc cccb cccc cccs cccu ccee ccrc ccre ccrs ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec cees cer- cerc cere cers cesc cese cesr cess crbc crbu crcc crce crcr cre- creb crec cree cres creu crss crub crue crus cscb cscc csce cscr cscs csec csee cser csrc csrs csse cssr csur csus cub- cubb cube cubs cucc cuce cucq cuer cues curb cure curr curs cusb cuss cusu ebbc ebbr ebbs ebcc eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce eces ecrc ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eerc eers eese equ- eque equs erbb erbe ercc erce ereb erec erer eres errc erre errs erse erub eruc erur erus esbs escb esce escr escs escu esee eser eses esqr esqs esse essu esus eubc euer eur- eurc eure euse q-be qcue qere qerq qqqq qrss qsqs qsrs qube qucu quee quer ques quu- rbbb rbbr rbbs rbss rcbc rccb rccc rccs rcsc rcss rebb rebe rebs rebu recc rece recr recs recu reeb rees reqs rere rers reru rese resq ress reue reus reuu rrrr rscc rscs rsee rsre rubb rube rubs rubu ruce ruer rues rurc rure rurs ruru ruse russ rusu sbbs sbcc sbcs sber sbse sbus sccc scce sccs scec scee scer scr- scrc scre scrs scsc scsr scsu scub scur se-c se-e se-s se-u sebe sebs sec- secc sece secr secs secu seeb seec seeq seer sees seeu seqq seqs sequ serb serc sere serq serr sers seru sesc sese sess seur srbc srcc sreb srec sres srub ssbr sscc ssce sscs ssec ssee sses ssrc ssrs sssb sssc ssss sub- subb subs suc- succ sucr sucs suee suer sues sueu suqs sur- surc sure surr surs suru sus- suse suss susu suus ubbe uber ucbc uces ucrc ucsb ucsc ucsu uers uess uqcc urbe urbs ure- ures urre urse urss ursu uruq urur urus usbc usbe usbr usbs uscc usce uscs usee user uses ussb ussc usse ussr usss ussu usus uuuu

bbbee bbqer bbser bbsrc bbuss bcers be-er beber bebes becue beebe beebs beers beque berbe bercu berec beres berre berru berse berus besee besse beuer beure brebu brece breer brees brere brers brese bress breu- brrrr brsec bruce bruer brues bruse bruss bsure bubbe buber buces bucsu bucur burbs burcu bures burrs burru burse buruc buruq burus buser buses busse bussu busur busuu c-bus cbers ccccc cebec ceber cebes cebus ceere ceese cerbu cerc- cerce cercs cerec cerer ceres cerre cerrs cerse cerss cerus cesce cescr cesse crebe crece creer crees cresc crese cress creu- creue crres cruce crucq crure cruse csere cubbe cubeb cuber cubes cubub cuers curbs curce curer cures curre currs curse cusec cuser cusse ebber ebers ebure ecrus ecser eeeee eques equus erbbe erber erebs erecs erere erres erses erubs esbus esces esere esqre esque esser esses essse essue esure eucre eurre eurus euser q-bus qbees qsrsr qubes queeb queer quere quers queue qureq quruq qurus quscu qusqu qusur rebbe rebec reber rebus recce recue recur recus reece reecs reere reese reque rere- reree reres resee reses resse resue resus reuer reuse reuss rubee ruber rubes rubus rucer rucuq ruere ruers rurec rusce ruses russe s-bus sccbc scere screc scree scrub scrue scrus scure scurr scuse sebbe sebes secre secur secus seebe seece seere seers seese seesu serbs serce serec serer seres serre serse serss serue sesce seser seses sesse sesue seuer seure seuss squee srbce srbec sssrb sssss subbu suber subss sucr- sucre suere suers suess sueur surer sures surre surur surus suser suses susse susus u-cee uber- ubers uqcrb uqcrq urbes ursus urubu uruce urucu us-sc usees users usque usses usure uuuuu

bbbbbb bbqers bbqrub bbsers becque becure beebee beebes beerse berbee berber berbes